Paul nordmann



W/TNESSES. INVENTOH fl. ATTORNEY.

(No Model.)

P. NORDMANN.

ELECTRIC LIGHTING SYSTEM.

No. 501,095. Patented July 11, 1893.

UNITED STATES PATENT OFFICE.

PAUL NORDMANN, OF BERLIN, GERMANY, ASSIGNOR TO SIEMENS & HALSKE, OF SAME PLACE.

ELECTRIC-LIGHTING SYSTEM.

SPECIFICATION forming part of Letters Patent No. 501,095, dated July 11, 1893.

Application filed November 18, 1892. Serial No. 452,429. (No model.) Patented in France June 27, 1889, No. 195,045; in Austria-Hungary June 27, 1889, No. 28,832 and No. 56,241; in England July 2, 1889.110. 10,699; in Italy July 5,1889,N0. 25,787; in $witzerland J'uly8,1889,1 l'o.26,andin Belgium April 26, 1890, No 90,329-

To aZZ whom it may concern:

Be it known that 1, PAUL NORDMANN, a subject of the King of Prussia, German Emperor, residing at the city of Berlin, in the German 5 Empire, have invented new and useful Improvements in Apparatus for Automatically Regulating the Potential in the Conductors for Two or More Sets of Electrical Lamps, (for which I have obtained Letters Patent in the following countries: France, No. 195,045, dated June 27, 1889; Austria-Hungary, No. 28,832 and No. 56,241, dated June 27, 1889; England, No. 10,699, dated July 2, 1889; Italy, No. 25,787, dated July 5, 1889; Switzerland,

[ No. 26, dated July 8, 1889, and Belgium, No.

90,329, dated April 26, 1890,) of which the following is a specification.

My invention relates to an apparatus for automatically regulating the potential in the conductors of a multiplewire system, in which two or more sets of translating devices are connected in parallel between the respective Wires and in parallel series with each other between the wires communicating with the 2 5 source of energy.

The accompanying diagram which serves to illustrate my invention, shows a generator of electricity, a multiple system of wires with translating devices connected in parallel series, and the regulating device which I employ connected to the system.

In the drawing, 5 represent any suitable generator of electricity; 6 and 7 respectively, main positive and negative wires leading therefrom; 8, neutral or balancing wire; 10, 10, two groups of translating devices, such as incandescent lamps, connected respectively between the wires 6, 8 and 7, 8, and in the manner commonly known as parallel series, between the Wires 6 and 7.

11 is a regulating device, which consists of two electro-magnets 12 and 12 connected in series in shunt between the wires 6 and 7, through the wires 14 and 13: the magnet 12 5 in shunt between the wires 6 and 8, through the wires 14 and 15, and the magnet 12 in shunt between the wires 7 and 8, through the wires 13 and 15.

16 and 16 also represent two electronnag nets, the coils of which are connected in series through the wire 17.

18 and 18 are contact points on the respective ends of the wire 17. The wire 17 is shown as connected to the wire 7 by the wire 13, and the wire 13 to the magnet 12 by the wire 19.

20 is a Wire connected to the wire 14, and also to the armature 21 located between the poles of the electro magnets 12 and 12. Connected to the armature 21 is a portion of metal 22, located between the contact points 18 and 18.

23 represents the armature of the magnets 16 and 16, pivoted at 24, and having curved arms 25 and 25.

26 is an arm extending from the armature 23 and having a toothed rack 27 on its lower end.

28 is a pinion pivoted at 29 and carrying the segmental contact arms 30 and 30. The arm 30 is connected through the wire 31 with the wire 7, and the arm 30, through the wire 32 with the wire 6.

33 is a wire connected to the central balancing wire 8 and to the contact points 34 7 through the wires 35.

10 are devices, such as lamps or other translating devices, arranged in parallel between the contact points 34 through the wire 33. These lamps or devices are given the same resistance as the lamps in the groups 10, 10.

The operation of my device is as follows:

If in one of the groups 10 or 10, a lamp is put out of action, the potential in the two lamp groups will become different, and consequently, the attraction of one of the electromagnets 12 or 12 will become greater than that of the other, and attract the armature 21, to close a circuit including either one or the other of the magnets 16, 16 which, being 0 energized, will attract its armature 23 by drawing either the horn 25 or 25 toward it, thus oscillating the armature upon the pivot 24. For instance, if two lamps are cut out of the circuit 10, the magnets 12 and 16 will 5 be energized and attract the horn 25 of the armature 23, and the armature, as attracted, will cause its toothed end 27 to move in the direction indicated by the dotted lines, and this motion will be transmitted to the segmental ends 30, 30 of the contact making device, and cause the end 30 to move forward to include the two contact points 34, thereby including in the circuit of the wires 7 and 8, two paths for the current, 2'. 6., resistance, equivalent to that taken outbetween the wires 7 and 8, in the outlying district. The arrangement of parts, as far as regards the magnets 16 and 16 and the armature 23, as shown, is such that the degree of movement of the armature 23, which takes place, is such as to cut lamps or other translating devices into the wire 33, equivalent to those out out of either one of the respective groups, and thereby compensate for changes taking place in either one of the groups of lamps in the external circuit, and to automatically regulate the potential in the wires of the system. With an equal number of translating devices included in the groups 10 and 10, the potential regulating mechanism will, of course, be inactive and willonly become active when a change takes place on either side of the balancing wire 8.

By reason of my improvement, any one or all of the lamps in either one of the groups may be turned on or off at will without interfering with the potential of the current delivered to the other lamps.

I have described my invention as applied to a three-wire system. It will be evidentto those skilled in the art to which this invention belongs, that the principle maybe equally well applied to any system of multiple wires wherein three or more wires are employed, and also that various changes may be made in the construction of the regulating device, without in any wise departing from the intent of my invention.

I claimas my invention- 1. In a system of electric distribution, the combination of a source of energy, main wires and an intermediate wire, and translating devices in parallel between the main wires and the intermediate wire, said translating devices being in parallel series between the main wires, a relay device connected to both sides of the system and an electro magnetic dev ce controlled by the relay device and a resistance device controlled by the electro magnetic device for the purpose of maintaining the potential in the various groups of the system constant, irrespective of the load.

2. In a system of electric distribution, the combination of a source of energy, main wires and an intermediate wire, and translating devices in parallel between the main wires and the intermediate wire, said translating devices being in parallel series between the main wires, a relay magnet connected to the opposite sides of the system and another magnet controlled by the said relay magnet, and a variable resistance controlled by the second magnet, so connected as to be cut in and out of each side of the system according to the variations of the load in order to maintain the potential constant in the respective groups.

3. In a system of electric distribution, the combination of a source of energy, main wires and an intermediate wire, and translating devices in parallel between the main wires and the intermediate wire, said translating devices being in parallel series between the main wires, a relay magnet composed of two simple magnets each connected to one side ofthe system, and an electro-magnet controlled by the first magnet, and a switching device controlled by the second magnet, and a variable resistance connected with the switching device to maintain the potential of the current constant which is supplied to the various groups.

In testimony whereof I have affixed mysignature in the presence of two witnesses.

PAUL NORDMANN. lVitnesses:

MAX WAGNER, JOHN P. DEUGLER. 

